EXPERIMENTAL AND THEORETICAL ANALYSIS OF LATERAL PRESSURES UNDER SQUARE FOUNDATION RESTING ON SAND

In this study, a square foundation sitting on sandy soils are modelled. The lateral stresses resulting from the vertical loadings of the model foundation were measured with pressure transducers placed on the wall of the test tank. Experiments are carried out in a square sand tank with dimensions of 75x75x100cm in the laboratory. Sand which have 10%, 40%, 65% and 90% relative densities were prepared and a square foundation of 15x15cm placed on it. The stresses which occurred on sand tank walls initially increased in the first 20 cm, which was close to the base of the foundation, gradually decreased in the subsequent depths and reached the minimum value in 50 cm. In the second part of the study, a correlation is proposed which can be used for estimation of stresses in the ground mass with the help of variables such as geometric parameters and relative densities. As a result of the regression analysis, the relationship between the lateral stresses and the geometric parameters depending on the environment of the model experiment was established